func (b *buildFile) addContext(container *runtime.Container, orig, dest string, remote bool) error {
var (
origPath = path.Join(b.contextPath, orig)
destPath = path.Join(container.RootfsPath(), dest)
)
// Preserve the trailing '/'
if strings.HasSuffix(dest, "/") {
destPath = destPath + "/"
}
fi, err := os.Stat(origPath)
if err != nil {
if os.IsNotExist(err) {
return fmt.Errorf("%s: no such file or directory", orig)
}
return err
}
if fi.IsDir() {
if err := archive.CopyWithTar(origPath, destPath); err != nil {
return err
}
return nil
}
// First try to unpack the source as an archive
// to support the untar feature we need to clean up the path a little bit
// because tar is very forgiving. First we need to strip off the archive's
// filename from the path but this is only added if it does not end in / .
tarDest := destPath
if strings.HasSuffix(tarDest, "/") {
tarDest = filepath.Dir(destPath)
}
// If we are adding a remote file, do not try to untar it
if !remote {
// try to successfully untar the orig
if err := archive.UntarPath(origPath, tarDest); err == nil {
return nil
}
utils.Debugf("Couldn't untar %s to %s: %s", origPath, destPath, err)
}
// If that fails, just copy it as a regular file
// but do not use all the magic path handling for the tar path
if err := os.MkdirAll(path.Dir(destPath), 0755); err != nil {
return err
}
if err := archive.CopyWithTar(origPath, destPath); err != nil {
return err
}
return nil
}
